AMSOIL Synthetic 5W-40 Premium Diesel Oil
replaces 5W-40, 10W-40 and 15W-40 viscosity oils. It
is “backwards compatible” with pre-2007 diesel engines
and recommended for newer and older diesel and
gasoline engines and other applications requiring the following
• API CJ-4, CI-4+, CH-4, CF
• API SM, SL, SJ...
• ACEA E7
• Mack EO-O Premium Plus
• DDC Power
• Caterpillar ECF-3, ECF-1
• Volvo VDS-4
• MB 228.3
• MTU Type II
AMSOIL Synthetic 5W-40 Diesel Oil (DEO) is the premium
choice for API CJ-4 emission-quality diesel oil required
by model-year 2007 and newer diesel engines. It
delivers extraordinary lubrication in diesel engines found
in commercial, fleet and personal vehicles. Built with
the latest additive and synthetic base oil technology,
AMSOIL Premium Synthetic 5W-40 Diesel Oil exceeds
the higher performance demands of modern engines.
It withstands the stress of heat, soot and acids to help
prevent deposits, wear and corrosion. AMSOIL Synthetic
5W-40 is wax-free with a broad viscosity range
to provide exceptional cold-weather starting and high temperature
protection. It resists breakdown and offers
maximum fuel efficiency over extended drain intervals.
AMSOIL, the leader in automotive synthetic lubrication,
produced the world’s first API-qualified synthetic
motor oil in 1972. Trust the extensive experience of
AMSOIL, The First in Synthetics,® to do the best
job protecting your engine.
Exceeds Emission System
AMSOIL Synthetic 5W-40 Diesel Oil is a low-sulfated
ash formulation that exceeds the requirements for
low-emission quality diesel oil. It is compatible with all
exhaust treatment devices and is designed to extend
the service life of diesel particulate fi lters (DPF).
Extended Drain Performance
AMSOIL Premium 5W-40 Diesel Oil can extend drain
intervals far beyond those recommended for conventional
petroleum oils. Its unique synthetic formulation and long-drain additive system
(10.4 TBN) deliver superior engine
protection, cleanliness and
performance over extended
drain intervals. AMSOIL Synthetic
5W-40 Diesel Oil provides
maximum protection for up to 3X the OEM-recommended
drain interval, even further with oil analysis.
Improves Fuel Economy
The advanced synthetic technology used to engineer
AMSOIL Premium 5W-40 Diesel Oil enhances viscosity
properties and is proven to deliver better fuel economy.
In fact, the Environmental Protection Agency’s (EPA)
Federal Test Procedure confirms that AMSOIL 5W-40
Diesel Oil provides up to 3 percent better fuel economy
than conventional 15W-40 diesel oils.
Reduces Oil Consumption
AMSOIL Synthetic 5W-40 Diesel Oil has lower volatility
(burn-off) than conventional petroleum oils. Because
less oil vapor passes into the combustion chamber, oil
consumption and emissions are reduced. Lower volatility
helps AMSOIL Premium Diesel Oil retain its viscosity
after high-temperature service for dependable protection
and excellent fuel economy.
Controls Soot-Thickening and Wear
The advanced synthetic base oils in AMSOIL 5W-40
Diesel Oil are naturally resistant to soot contamination.
That, along with a heavy fortification of detergent/dispersant additives, keeps soot particles suspended
independently, helping prevent the formation of larger
wear-causing particles. Viscosity increase is minimized
and soot-related wear is controlled.
AMSOIL Premium CJ-4 Synthetic 5W-40 Diesel Oil is
recommended for diesel engines and, where appropriate,
gasoline engines requiring any of the following
• SAE 5W-40 • API CJ-4, CI-4+, CF, SM
• ACEA E7, E9 • Mack EO-O Premium Plus
• DDC Power Guard 93K218
• Caterpillar ECF-3, ECF-2 • Cummins 20081
• Volvo VDS-4 • MB 228.31 • MTU Type I & II
• MAN 3275 • JASO DH-2 • Global DHD-1
• Renault RLD-3
AMSOIL Synthetic 5W-40 Diesel Oil is compatible
with conventional and synthetic motor oils. Mixing
AMSOIL motor oils with other oils, however, will shorten
the oil life expectancy and reduce the performance
benefits. AMSOIL does not support extended drain
intervals where oils have been mixed.
Aftermarket oil additives are not recommended for
use with AMSOIL motor oils.
AMSOIL Premium API CJ-4 Synthetic 5W-40 Diesel Oil (DEO) is recommended for extended drain intervals in engines that are unmodified and in good operating condition:
Diesel Engine Service
- Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.
- 2007-2009 Caterpillar C13, C15 on-highway engines must follow OEM drain interval.
- 2007-2010 Dodge 6.7L, Ford 6.4L, GM 6.6L LMM light duty diesel pickups must follow OEM drain interval. Drain intervals can be extended further with oil analysis.
Gasoline Engine Service
- Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.
*Operating conditions and drain intervals for normal and severe service are defined by the OEM. Refer to your owner’s manual.
Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.
Premium API CJ-4 Synthetic 5W-40
Diesel Oil (DEO)
Viscosity @ 100°C, cSt (ASTM D-445)
Viscosity @ 40°C, cSt (ASTM D-445)
Index (ASTM D-2270)
@ -30°C, cP (ASTM D-5293)
Point °C (°F) (ASTM D-92)
Point °C (°F) (ASTM D-92)
Point °C (°F) (ASTM D-97)
Volatility (DIN 51581) 250°C for 1
hour, % weight loss
Wear Test (ASTM D-4172: 40kgf, 75°C,
1200 rpm, 1 hr) Scar diameter, mm
Temperature/High Shear Viscosity,
cP (ASTM D-4683)
Sulfated Ash Content, wt. %